*Independent and Dependenent Variable Scenarios

Question 1

What is the independent variable in the following scenario?
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed after two years.

Answer 1

Growth Hormone

Question 2

What is the dependent variable in the following scenario?
A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed after two years.

Answer 2

Weight of the cows

Question 3

What is the independent variable in the following scenario?
Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The numberof mosquito bites is counted after 2 hours.

Answer 3

Mosquito repellent

Question 4

What is the dependent variable in the following scenario?
Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The numberof mosquito bites is counted after 2 hours.

Answer 4

Number of mosquito bites

Question 5

What is the independent variable in the following scenario?
One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day.

Answer 5

Type of water

Question 6

What is the dependent variable in the following scenario?
One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day.

Answer 6

Mass of grapes

Question 7

What is the independent variable in the following scenario?
Two different cars are traveling at 60mph. At a certain point, both cars slam on the brakes. The distance it takes for each car to stop is then measured.

Answer 7

Type/brand of car

Question 8

What is the dependent variable in the following scenario?
Two different cars are traveling at 60mph. At a certain point, both cars slam on the brakes. The distance it takes for each car to stop is then measured.

Answer 8

Distance it takes for cars to stop

Question 9

What is the independent variable in the following scenario?
Pillbugs are placed in a container where they have a choice of wet or a dry environment. Researchers record how much time was spent of each side.

Answer 9

Environment

Question 10

What is the dependent variable in the following scenario?
Pillbugs are placed in a container where they have a choice of wet or a dry environment. Researchers record how much time was spent of each side.

Answer 10

Time pillbugs spent on each side

Question 11

What is the independent variable in the following scenario?
A stapler is used to staple 100 papers, it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times.

Answer 11

Type of stapler

Question 12

What is the dependent variable in the following scenario?
A stapler is used to staple 100 papers, it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times.

Answer 12

Number of times stapler jams

Question 13

What is the independent variable in the following scenario?
Cockroaches are exposed to a pesticide. Ater 3 hours, 95% of the insects are dead.

Answer 13

Pesticide

Question 14

What is the dependent variable in the following scenario?
Cockroaches are exposed to a pesticide. Ater 3 hours, 95% of the insects are dead.

Answer 14

Percentage of cockroaches dead

Question 15

What is the independent variable in the following scenario?
Two plants are grown using the same light and pots. One plant is given water that has been microwaved and the other is given regular tap water. Their height is measured after 2 weeks.

Answer 15

Temperature of water

Question 16

What is the dependent variable in the following scenario?
Two plants are grown using the same light and pots. One plant is given water that has been microwaved and the other is given regular tap water. Their height is measured after 2 weeks.

Answer 16

Height of the plants

Question 17

What is the independent variable in the following scenario?
The blood pressure of a soldier is measured while he is resting. The soldier is then exposed to a stressful environment and his blood pressure is measured again.

Answer 17

Environment of the soldier

Question 18

What is the dependent variable in the following scenario?
The blood pressure of a soldier is measured while he is resting. The soldier is then exposed to a stressful environment and his blood pressure is measured again.

Answer 18

Blood pressure of the soldier

Question 19

What is the independent variable in the following scenario?
An apple is cut into slices. Half of the slices are sprayed with lemon juice. All slices are stored in a sealed plastic bag. After 4 days, they are observed to see how brown they turned.

Answer 19

Lemon juice

Question 20

What is the dependent variable in the following scenario?
An apple is cut into slices. Half of the slices are sprayed with lemon juice. All slices are stored in a sealed plastic bag. After 4 days, they are observed to see how brown they turned.

Answer 20

How brown the apple turned

Question 21

What is the independent variable in the following scenario?
The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured again.

Answer 21

Temperature of water goldfish is in

Question 22

What is the dependent variable in the following scenario?
The respiration rate of a goldfish is measured. The goldfish is then placed in cold water and the respiration rate is measured again.

Answer 22

Respiration rate of the goldfish

Question 23

What is the independent variable in the following scenario?
Bacteria are grown in a petri dish. One side of the dish is sprayed with an antibiotic. After a week, the number of bacteria colonies are counted on each side.

Answer 23

Antibiotic

Question 24

What is the dependent variable in the following scenario?
Bacteria are grown in a petri dish. One side of the dish is sprayed with an antibiotic. After a week, the number of bacteria colonies are counted on each side.

Answer 24

Number of bacteria colonies on each side